We look at the division of 866230 by 72 
Our goal is to divide 866230 by 72.

Moving on to step 1:
The number 72 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 72

Let's proceed to step 2:
86 divided by 72 is 1 with a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 72 away from 86, we end up with 14.
Include the next digit (6) from the dividend after 14, then repeat: 146 / 72

Going ahead to step 3:
If we divide 146 by 72, we get 2 and a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtract 144 from 146 to get 2.
Include the next digit (2) from the dividend after 2, then repeat: 22 / 72

Advancing to step 4:
The number 72 fits into 22 0 times, leaving a remainder of 22.
Use 0 as the next digit of our solution. 
Result so far: 120.0
If we subtract 0 from 22, we get 22.
Include the next digit (3) from the dividend after 22, then repeat: 223 / 72

Step 5:
72 can be fit into 223 3 times, resulting in a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 1203.0
Deduct 216 from 223 and we're left with 7.
Bring next digit (0) of the dividend behind the 7 and repeat the process: 70 / 72

Step 6:
When dividing 70 by 72, we get 0 with a remainder of 70.
The next digit of our result is 0. 
Result so far: 12030.0
Subtracting 0 from 70 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 7:
The number 72 fits into 700 9 times, leaving a remainder of 52.
Put 9 as the next digit of the answer. 
Result so far: 12030.9
If we take 648 away from 700, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 8:
520 divided by 72 is 7 with a remainder of 16.
The number 7 becomes the next digit in our result. 
Result so far: 12030.97
The remainder is 16 after subtracting 504 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 9:
When dividing 160 by 72, we get 2 with a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 12030.972
Deduct 144 from 160 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 10:
If we divide 160 by 72, we get 2 and a remainder of 16.
The next digit of our result is 2. 
Result so far: 12030.9722
If we subtract 144 from 160, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final result is 12030.9722 with a remainder of 0.00016.